Part 1 recounts the disappearance of Shannon Matthews in February 2008. After several emotional appeals by her mother Karen for Sharon's safe return, the country looked on in disbelief when Karen confessed to a Police Officer that it was all an elaborate hoax. Part 2 of the show focuses on schoolgirl killer Stuart Hazell who appeared tearful and distraught following the disappearance of 12-year-old Tia Sharp in August 2012.

The disappearance of a young mother. Feeling under pressure, her husband invited a TV crew to clear his name, while experts analysed his statements for tell-tale signs of deception. Part 2 details the horrific story of The Philpotts. On 11 May 2012, the family's home in Allenton, Derby, was seriously damaged by fire at around 4am. Five children who had been asleep upstairs — all died at the scene, while their half-brother died in hospital three days later.

The murder of Cambridgeshire 10-year-olds Holly Wells and Jessica Chapman in 2002. Experts study media interviews of their killer, Ian Huntley, to expose his lies.

The case of Tracie Andrews, whose 1996 road rage attack killed her lover Lee Harvey. Plus, Hampshire businessman Mike Gifford-Hull's TV plea for his missing wife Farsi that hid the true facts of her disappearance.

The murder of building society manager Carol Wardell in September 1994, by her husband Gordon. Plus, the `honour killing' of 17-year-old Shafilea Ahmed in September 2003, suffocated by her parents Iftikhar and Farzana.

The case of paralympian Oscar Pistorius, who shot his girlfriend Reeva Steenkamp dead in 2013. He claimed it was an accident, but there were suspicions he was falsifying evidence.

The case of John Tanner, who took part in a police reconstruction when his fiancée vanished. Plus, Paul Dyson whose TV plea for his missing lover raised suspicions. Series examining the phenomenon of criminal cases where people publicly feign innocence about a crime they have committed, shedding crocodile tears in the process.

The murder of best-selling author Helen Bailey by her partner Ian Stewart, who had earlier helped volunteers in her search. The 51-year-old's body was eventually found dumped in a cesspit beneath the garage of her £1.5million home in Royston, Hertfordshire, alongside that of her dog in July 2016. She had been drugged and suffocated.

The cases of Miles Evans and Fadi Nasri. Evans murdered his nine-year-old stepdaughter Zoe in 1997, but before her body was recovered he sat alongside her mother in an appeal for the public's help in finding her. In 2006, Nasri asked for help in finding the person behind a fatal knife attack on his wife Nisha, though in reality had hired two men to perform the killing to claim her life insurance.

Levi Bellfield. Levi Bellfield denied his connection to a series of murders and rapes, but videotaped police interviews tell a different story. Experts spot the giveaway signs.

Experts analyse a man’s deception following the Manchester Arena terror attack. Police tapes expose a man who murdered his wife and hid her body in the freezer.

When arrested for historic sexual offences, TV weatherman Fred Talbot tried to hide the truth in police interviews. His repeated response of ‘no comment’ speaks volumes.

Harold Shipman was a much-loved doctor. Millions watched the GP speaking on TV discussing the benefits of care, not knowing he'd already killed dozens of patients.

Eight-year-old Jamie Lavis was on the bus Darren Vickers was driving before he disappeared. Vickers joined the hunt and spoke on TV – but was hiding an awful truth.

Shana Grice was murdered after being stalked by her ex-boyfriend, Michael Lane. He denied involvement, but experts examine police videos to determine the truth.

In a rage, Ben Butler killed his young daughter, Ellie, but along with his wife faked a 999 call and protested innocence. Experts analyse their interviews.

When 16-year-old Becky Watts vanished without trace suspicions fell on her step-brother and his partner. Experts analyse police interviews for clues.

When April Barber was murdered at a remote beauty spot, her husband said he tried to stop the killer and even appealed for help on TV. Experts analyse his deception.

When Laci Peterson went missing, her husband claimed he last saw her before he went fishing - but his secret mistress exposed his lies. Experts examine his behaviour.

Examining the shocking cases where perpetrators have tried to feign innocence, deceiving the police and the public on missing persons and murder crimes they committed.

In 1985, Jeremy Bamber shot his parents, his sister and her twin sons. He protested his innocence - what do his messages from prison reveal?

One man's claims about a VIP paedophile ring threatened to destroy the reputation of some of Britain's most powerful people. But, was he telling the truth?

Christopher Halliwell is known to have killed two young women. Experts analyse his police interviews to assess whether he is responsible for more unsolved disappearances.

A young father returns to England after his wife and baby daughter are found shot dead at their US home. What really happened? Experts analyse his behaviour.

Why was Aram Kurd the only person to survive an explosion at his supermarket that killed five people? Experts identify his deception in TV and police interviews.